Type-writer ribbon-feed.



A. C. ROEBUCK.

TYPE WRHER RIBBON FEED. APPUCATION HLED 050.!5. 19x3 1 ,1 89,486. Patented July 4, 1916.

2 SHEETS-SHEET 1.

I77 I A" A C. ROEBUCK.

TYPE WRITER R|BBON FEED. APPLICAHON FILED DEC.15,1913.

1 ,1 89,486. Patented July 4, 1916.

2 SNEETS-SHET 2.

To all whom it may concern;

nnvan 0. Relaxation, or woons'rocx, ILLINOIS.

-Appl1cation filedlleeember 15, 1913. Serial Ko. 806,7Q0.--

' a citizen of the United -States, residing at \V'oodstoclr, in; the :county of McHe-n'ry and direction of ribbon feed is .easily. 'i"eversed;'

Fortheattainment of these ends and the] accomplishment of other. new and usefulif objects, as will appear' thei invention con-'5 State of llliriois,-'liave invented certain new and useful V Ribho.

, of which the following is a ..,nti n relatesfto ribbon feeding devices for typewriters and more particu: larly tomeans forfeedmg the ribbon upon the return movement of the universal bar.

The principal object of t-heeinvention' to provide an improved-fribbon feeding device operated from the-rock $haft,'-and to.

provide a-deviee of this classin which: the

sists in the features of novelty in the-construction, combination andarrangement. of

the sevezal parts generally shown in the accompanying'drawings and described in the specification but more particularly pointed. out in-th appended claims;

a sectionline 1 1 of'Fig. 2';' 2 is a. side elevation, partsjbeing shown in section; of

one of the ribbon feeding devices; and Fig.

3xis another view inielevation, some of the parts being omitted and others shown in section; of the mechanism shown by Fig. 1.

Mounted in a typewriter frame, desig nated generally by the reference nun'ieral 5' at opposite ends thereof; are ribbon spool shafts 6 each provided with a shoulder 7 upon which the'ribbon spool is supported,

. the shoulder being formed with a projection 8 to engage a spool. 'Spoolrguards 9 are mounted on the frame surrounding the spool shafts 6 with edges extending upwardly about the periphery of the spool. .Monntcd V on each spool shaft 6. below the top of the frame is a toothed wheel 10;

A rock shaft 11 e-xtends transversely across themacnine and rotates freely in bearings 12 forming apart of the frame at the sides thereof. Motion is given to the rock shaft by means of the universal bar 1'3 which is -connected: to er formed integral .with a 1mm M'provided with a perforated-ear 15 which oscillates to and fro when the universal bar is struck by the type bars of the provements in Type flr'riter' rwin-warren RIBBON-FEED.

" Specification of Lexie-ringer. P5tht Ju y -19 typewriter (not 'shown). arm 16 is se-' cured the r'oekshaftll andearries-a pin a 17 which extends through the perforation of the ear 1 5. The-pin 17'is'of considerable lengthto permit the longitudinal movement-- of the rock shaft which constitutes.. 1 0 it i I shift rod for the feeding mechanism. collar 18 is adjnstably secured 'to the shaft 11 adjacent each end thereofto which 05 is secured an arm19 formed at its freeend with an offset portion 20.' Pivotally mount eol son a pin 21 secured -to the framenx is aratchet pawl 22,- on vend of which engages the teethi of, the wheel1*10, th iother 7e end of which sin-position-toJoe-engaged yby the'ofiset portion -of the-arm l9'wheri the shaft- -11 ,is 'shifted longitudinally; The 1' pivotal portion of the-pawl 22 isformd by;

bending ears-23ml; right'angles'to {the 3:75

portion of the pawlfandiperforatingr-themf 0 that the pin 2;; willfpassf throughf; them 2- The extremities pf thcsesears 23 1 am icon nected by :means of a 'sprin gfl l withaffixed' I point 'orip in 25 secured tothe' fiamejso name the spring tends to draw? the -pariilainto eix--- p fgagementflwith its; corresponding: toothed in the drawings, Figure 'is' a view of.

,mechanisin constructed in accordance with the principles of my invention as viewed on livdtally'connected to :the 'arnrIQ- at "a point intermediate the extremities thejreof is a ratchet pawl 26. flhis pawl 265-1 outer extremity adapted to engage 'wi' toothed Wheel 10 and is formed with ari 'ea-r- 27 to which a spring 28 is attached comet-e ing with a fixed point, as the pin 26 for drawing the pawl into engagement with the wheel. through a space formed between the other This pawl 26 prefe rabl extends pawl'22 and-its pivot pin 21, and it is there-g by prevented frqni lateral -mor'ein'entby em g agement withfthe ears-23 ofthe pawl '22. The extremity ofthe pawl .26, is ad jacent the arm '19, is formed'wi through which the shaft extent the [ties .of' the pawl below the shaft being fo rmed with a rounded projection 26 to bear against the arm 13, and the arm being Uforined witl'i a. projeet-ion'3 0. which bears 7 against the pawl 26 above the slot. Be-

tween the projections 30 and 2-6 is a pivot shaft is moved a certain amount in one direction one of the feeding devices is in engagement with one of the toothed wheels 10 while the other one is moved about the pivot pin 21 out of engagement with its corresponding toothed wheel. \Vhen the shaft 11 1s moved in the other direction, the offset portion 20 of arm 13 moves the retaining pawl 22 out of engagement with the wheels 10, while the feeding pawl 26 is moved out of engagement through its pivotal action with the main part of arm 13 being rocked by an adjusting device 35. The shaft 11 is also formed .with a portion of reduced diameter 36 in which a pin 3'Tadjus-tably threaded in the frame and secured in position by a nut 38 is adapted to engage. This pin, by its engagement with the extremities of the portion of reduced size, limits the longitudinal-movement of the shaft and prevents its overthrow in either direction. The extremities of the shaft project slightly beyond its bearings 12 at the ends so that it can be readily engaged for movement in either direction by the hand of an operator.

In moving the pawls of either feedingset by the longitudinal movement of the rock shaft the pawl 26 is rocked upon the'projections 26 and 30 which are rounded for this purpose. The projections space the pawl 26 from the adjacent faceof the arm, and together with the pivot pin 31, hold the pawl.

In operation the reciprocation of the universal bar causes the oscillation of the rock shaft 11 and it in turn communicates the oscillation by means of one of the pawls 2G to the corresponding toothed wheel 10. The other pawl 22 corresponding thereto acts as a holding pawl to prevent the reversal in rotation of the toothed wheel 10. The reciprocating movement of the pawl 26 causes the rotation of fthe toothed wheel 10 and the consequent ro ation of the ribbon spool. The other ribbp spool is free to rotate at this time because the other feeding device is not in connection with its toothed wheel.

What I claim is:

1. In a. typewriter, a reciprocable universal bar fra 1e having a perforated car, a

rotatable am longitudinally movable shaft, an arm connected thereto having a pro ection of sufficient length to extend through the perforated ear to permit the longitudinal movement of the shaft, and ribbon feed:

ing devices operated by the shaft.

2. -In a tvnewriter ribbon feeding mechatudinally movable shaft, having a portion of reduced diameter forming shoulders thereon, of ratcheting devices in connection therewith thrown into'and out of engagement by the longitudinal movement of the shaft, and fixed means consisting of a lock nut and a threaded stud therefor to engage the shoulders formed by the portion of reduced diameter to limit the movement of the shaft in both directi ns.

3. In a device of the class described, the combination with a longitudinally movable. rock shaft having annular grooves and a portion of reduced diameter forming shoulders therein, of ribbon feeding devices operated by the rock shaft and thrown into and out of engagement by the longitudinal nismy the combination of a rotary and longimovement thereof, a spring-pressed catch to engage the notches, and a pin adjustable to engage the said shoulders to limit the longitudinal movement of the shaft in either direction.

4. In ribbon feeding mechanism, the combination with a toothed wheel, of a pivoted pawl adapted to engage the wheel at one end, a second pawl adapted to engage the toothed Wheel, a rock shaft to which the second pawl is pivoted and by which it is reciprocated, and an arm connected to the rock shaft adapted to engage the free end of the first mentioned pawl when the shaft is moved longitudinally.

5. In a typewriter ribbon feeding mechanism, toothed ratchet wheels, pivotally mounted pawls adapted to engage the ratchet wheels, feeding pawls to rotate the ratchet wheels, a longitudinally movable rock shaft, and arms connected to the rock shaft to which the feeding pawls are pivoted, the arms being adapted to engage the pivotally mounted pawls at their free end to move one ofthe pivotally mounted pawls and acorresponding feeding pawl into engagement with the ratchet wheel and another pivotally mounted pawl and feeding pawl out of engagement when the rock shaft is moved longitudinally.

6. In typewriter ribbon feeding mechanism, the combination with a toothed ratchet wheel, of a pivotally mounted pawl therefor, a reciprocatory feeding pawl, a. longi tudinally movable rock shaft, arms having an offset portion connected to the shaft to which the feeding pawl is pivoted, and means for spacing the feeding pawl from the other pawl, the longitudinal movement of the shaft moving the pawls into and out of engagemcnt'with the toothed wheel, the

offset portion of the arm engaging the free f extending between the ears and between the other pawl and its pivot pin, means tending to draw both pawls in engagement with the Wheel, a longitudinally movable rock shaft, an arm connected to the rock shaft having an olfset portion to engage the free end of the pivoted pawl when the shaft is moved longitudinally, the second named pawl being pivotally connected to the arm at a. point spaced from the shaft and having a slotted portion through which the shaft extends to permit the oscillation of the pawl about its pivot point when the shaft is oscillated. and means to space the pawls apart.

In ribbon feeding mechanism, the combination with a laterally movable arm, of a feeding pawl pivoted thereto, and means to space the pawl from the arm, upon which means the pawl is rocked "when the arm is moved.

feeding pawl pivoted thereto at the side, and projections on the pawl and arm upon which the arm is rocked when the arm is moved laterally.

10. In ribbon feeding mechanism, the combination with a longitudinally movable roekshaft, of an arm secured thereto having a lateral rounded projection, a pawl having a lateral rounded projection, and a pin to pivot the pawl on the arm, the pin being in line with the projections. the pawl being spaced from the arm by the projections and the lateral movement of the shaft causing the pawl to be rocked on the projections.

In testimony whereof I have signed my name to this specification. in the presence of two subscribing witnesses, on this 11th day ot- December. A. l). 1913.

ALVAH (f. ROEBUCK. W'itnesses CHARLES ll. SEEM, Kenn W. WONNELL. 

